US8839750B2 - System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems - Google Patents
System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems Download PDFInfo
- Publication number
- US8839750B2 US8839750B2 US12/910,212 US91021210A US8839750B2 US 8839750 B2 US8839750 B2 US 8839750B2 US 91021210 A US91021210 A US 91021210A US 8839750 B2 US8839750 B2 US 8839750B2
- Authority
- US
- United States
- Prior art keywords
- engine
- valves
- lift
- valve lift
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
-
- F01L9/02—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/08—Timing or lift different for valves of different cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/08—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing for rendering engine inoperative or idling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y02T10/18—
Definitions
- the present disclosure relates to internal combustion engines and more particularly to a system and method for controlling hydraulic pressure in electro-hydraulic valve actuation (EHVA) systems.
- EHVA electro-hydraulic valve actuation
- Internal combustion engines draw air into an intake manifold through an inlet system that may be regulated by a throttle.
- the air in the intake manifold may be distributed to a plurality of cylinders through a plurality of intake valves, respectively.
- the air may be combined with fuel to create an air/fuel (A/F) mixture.
- the A/F mixture may be combusted within the cylinders to drive pistons that rotatably turn a crankshaft generating drive torque.
- Exhaust gas resulting from combustion may be expelled from the cylinders through a plurality of exhaust valves, respectively, and into an exhaust manifold.
- the intake and exhaust valves may be actuated by one or more camshafts. Alternatively, however, the intake and exhaust valves may be electrically controlled using hydraulic actuators (“electro-hydraulic” control).
- the electro-hydraulic control of intake and exhaust valves of an engine may be referred to as electro-hydraulic valve actuation (EHVA). Therefore, an EHVA engine may not include camshafts (i.e., a cam-less engine). More specifically, an EHVA system may control hydraulic pressure (i.e., pressure of a hydraulic fluid) to selectively engage/disengage hydraulic actuators that enable/disable intake and/or exhaust valves.
- a control system for an engine includes a first lift control module and a second lift control module.
- the first lift control module increases lift of M valves of the engine to a predetermined valve lift during a period before disabling or re-enabling N valves of the engine.
- the second lift control module decreases the lift of the M valves to a desired valve lift during a period after enabling or re-enabling the N valves of the engine, wherein N and M are integers greater than or equal to one.
- a method includes increasing lift of M valves of an engine to a predetermined valve lift during a period before disabling or re-enabling N valves of the engine, and decreasing the lift of the M valves to a desired valve lift during a period after enabling or re-enabling the N valves of the engine, wherein N and M are integers greater than or equal to one.
- the systems and methods described above are implemented by a computer program executed by one or more processors.
- the computer program can reside on a tangible computer readable medium such as but not limited to memory, nonvolatile data storage, and/or other suitable tangible storage mediums.
- FIG. 1 is a functional block diagram of an exemplary engine system according to the present disclosure
- FIG. 2 is a schematic of an exemplary electro-hydraulic actuated valve according to the present disclosure
- FIG. 3 is a functional block diagram of an exemplary control module according to the present disclosure.
- FIG. 4 is a flow diagram of a first exemplary method for controlling hydraulic pressure in an electro-hydraulic valve actuation (EHVA) system according to the present disclosure.
- EHVA electro-hydraulic valve actuation
- FIG. 5 is a flow diagram of a second exemplary method for controlling hydraulic pressure in an EHVA system by controlling valve lift according to the present disclosure.
- module refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- ASIC Application Specific Integrated Circuit
- processor shared, dedicated, or group
- memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- EHVA electro-hydraulic valve actuation
- EHVA systems may operate by electrically controlling hydraulic actuators that actuate the intake and/or exhaust valves. Operation of EHVA systems (i.e., the hydraulic actuators), however, may be limited based on hydraulic pressure (e.g., oil pressure). In other words, EHVA systems may have a hydraulic pressure operating range (e.g., between first and second thresholds). During valve deactivation and/or reactivation, however, the hydraulic pressure may fluctuate outside of the hydraulic pressure operating range.
- hydraulic pressure e.g., oil pressure
- Conventional control systems wait for the hydraulic pressure to stabilize before proceeding with a requested valve deactivation or reactivation operation.
- conventional control systems may wait for the hydraulic pressure to remain within the hydraulic pressure operating range for a period before proceeding with the requested valve deactivation or reactivation operation.
- Conventional control systems therefore, may suffer from slow response to valve deactivation and reactivation requests. For example, the slow response may result in decreased performance, combustion problems, and/or damage to components of the engine.
- the system and method may control valve lift to prevent the hydraulic pressure from fluctuating outside of the hydraulic pressure operating range. More specifically, a volume of hydraulic fluid (e.g., oil) used—and thus the hydraulic pressure—is a function of the commanded valve lift. Therefore, the system and method may increase lift of M valves to a predetermined valve lift when enabling or disabling N valves.
- an engine may include X total valves and X may include a sum of N and M. Additionally, for example, N may equal M (e.g., half of the valves may be disabled).
- the system and method may then decrease the lift of the M valves to a desired valve lift.
- the desired valve lift may be based on driver input and/or operating parameters (e.g., mass air flow, or MAF rate, engine speed, etc.).
- the predetermined valve lift may be twice the desired valve lift. Increasing the lift of the M valves to the predetermined valve lift may decrease the hydraulic pressure thus preventing the hydraulic pressure from exceeding the desired operating range. Similarly, decreasing the lift of the M valves to the desired valve lift may increase (and stabilize) the hydraulic pressure thus preventing the hydraulic pressure from falling below the desired operating range.
- an engine system 10 includes an engine 12 .
- the engine 12 may include a spark ignition (SI) engine, a compression ignition (CI) engine (e.g., a diesel engine), or a homogeneous charge compression ignition (HCCI) engine.
- SI spark ignition
- CI compression ignition
- HCCI homogeneous charge compression ignition
- the engine 12 may also include a different type of engine and/or additional components, such as in a hybrid engine system (e.g., an electric motor, a battery system, a generator, etc.).
- the engine 12 draws air into an intake manifold 14 through an intake system 16 that may be regulated by a throttle 18 .
- the throttle 18 may be electrically controlled (e.g., electronic throttle control, or ETC).
- a mass air flow (MAF) sensor 20 may measure a rate of air flow into the intake manifold 14 .
- the measurement of the MAF sensor 20 may indicate a load on the engine 12 .
- an intake manifold absolute pressure (MAP) sensor 22 may measure a pressure of the air in the intake manifold 14 .
- the air in the intake manifold 14 may be distributed to a plurality of cylinders 24 through a plurality of intake valves 26 , respectively. While six cylinders are shown, the engine 12 may include other numbers of cylinders.
- the air may be combined with fuel from a plurality of fuel injectors 28 to create an air/fuel (A/F) mixture.
- the fuel injectors 28 may inject the fuel via intake ports of the cylinders 24 , respectively (e.g., port fuel injection) or directly into the cylinders 24 , respectively (e.g., direct fuel injection). Additionally, for example, the fuel injectors 28 may inject the fuel at different times depending on the type of engine.
- the A/F mixture in the cylinders 24 may be compressed by pistons (not shown) and ignited by a plurality of spark plugs 30 , respectively (e.g., SI engines or HCCI engines using spark assist).
- the air in the cylinders 24 may also be compressed by the pistons (not shown) and combusted by injecting the fuel into the pressurized air (e.g., CI engines, such as diesel engines).
- the pistons rotatably turn a crankshaft 36 generating drive torque.
- An engine speed sensor 38 may measure a rotational speed of the crankshaft 36 (e.g., in revolutions per minute, or RPM).
- the drive torque may be transferred to a driveline 40 (e.g., wheels) of the vehicle via a transmission 42 .
- the transmission 42 may be coupled to the crankshaft 36 via a fluid coupling such as a torque converter.
- a transmission output shaft speed (TOSS) sensor 44 may measure a rotational speed of an output shaft of the transmission 42 (e.g., in RPM).
- the measurement of the TOSS sensor 44 may indicate a speed of the vehicle.
- Exhaust gas resulting from combustion may be expelled from the cylinders 24 through a plurality of exhaust valves 32 , respectively, and into an exhaust manifold 46 .
- the intake and exhaust valves 26 , 32 may be controlled (i.e., disabled or re-enabled) by hydraulic actuators 34 .
- the hydraulic actuators 34 may be electrically controlled to selectively actuate (i.e., lift) the intake and exhaust valves 26 , 32 .
- the exhaust gas in the exhaust manifold 46 may then be treated by an exhaust treatment system 48 before being released into the atmosphere.
- the exhaust gas may also be recycled, such as into the intake manifold 14 via an exhaust gas recirculation (EGR) system or to power a turbocharger (not shown).
- EGR exhaust gas recirculation
- turbocharger not shown
- the engine 12 may also include other types of forced induction (e.g., a supercharger).
- a control module 50 communicates with and controls various components of the engine system 10 .
- the control module 50 may receive signals from the throttle 18 , the MAF sensor 20 , the MAP sensor 22 , the fuel injectors 28 , the spark plugs 30 , the hydraulic actuators 34 , the engine speed sensor 38 , the transmission 42 , the TOSS sensor 44 , and/or the exhaust treatment system 48 .
- the control module 50 may control the throttle 18 (e.g., ETC), the intake and exhaust valves 26 , 32 (by controlling the hydraulic actuators 34 ), the fuel injectors 28 , the spark plugs 30 , the transmission 42 , and/or the exhaust treatment system 48 .
- the control module 50 may communicate with and/or control other components (e.g., an EGR system, a turbocharger or a supercharger, etc.).
- the control module 50 may also implement the system or method of the present disclosure.
- the electro-hydraulic actuated valve 55 may include one of the hydraulic actuators 34 and one of the intake or exhaust valves 26 , 32 .
- the electro-hydraulic actuated valve 55 includes a hydraulic actuator 60 , a valve 61 , and a return spring 62 .
- the hydraulic actuator 60 is selectively energized by controlling hydraulic fluid pressure to open/close the valve 61 .
- the valve 61 may be locked by trapping the hydraulic fluid (i.e., maintaining a constant hydraulic pressure).
- the return spring 62 may assist the valve 61 in returning to a closed position (i.e., when the actuator 60 is de-energized).
- the electro-hydraulic actuated valve 55 also includes first, second, and third solenoids 63 - 65 , respectively.
- the first and second solenoids 63 , 64 may include two-way solenoids and the third solenoid 65 may include a three-way solenoid.
- the first, second, and third solenoids are electrically controlled (e.g., via the control module 50 ) to control the hydraulic fluid pressure and thus control the hydraulic actuator 60 and the valve 61 .
- the electro-hydraulic actuated valve 55 may include an internal feedback system (IFS) 69 for controlling the hydraulic fluid flow/pressure and thus controlling the hydraulic actuator 60 and the valve 61 .
- IFS internal feedback system
- the control module 50 may selectively actuate combinations of the first, second, and/or third solenoids 63 - 65 to allow hydraulic fluid flow (and thus hydraulic pressure) from first, second, and third hydraulic fluid rails 66 - 68 , respectively.
- the first hydraulic fluid rail 66 may include a low pressure rail (e.g., less than a first threshold)
- the third hydraulic fluid rail 68 may include a high pressure rail (e.g., greater than a second threshold)
- the second hydraulic fluid rail may include a mid-pressure (i.e., base pressure) rail (e.g., between the first and second thresholds, or rather a pressure between the low and high pressure rails).
- the control module 50 may include first lift control module 70 and a second lift control module 74 .
- the control module 50 may also include memory (not shown) for storing determined and/or predetermined parameters.
- the memory may include non-volatile memory (NVM).
- the first lift control module 70 receives a signal 72 indicating a request to disable or re-enable N valves of the engine 12 and a signal 76 indicating a desired valve lift.
- the request to disable or re-enable N valves of the engine 12 may be based on engine load (e.g., MAF).
- the desired valve lift may be based on driver input (e.g., via an accelerator) and/or other operating parameters (e.g., MAP, engine speed, etc.).
- the first lift control module 70 may control the lift of a remaining M of the intake and/or exhaust valves 26 , 32 (via the hydraulic actuators 34 ) based on the signal 72 .
- the engine 12 may include [(N+M)/2] total cylinders.
- N may equal M (i.e., deactivation of half of the cylinders 24 ).
- the first lift control module 70 may increase the lift to a predetermined valve lift.
- the predetermined valve lift may be twice the desired valve lift (e.g., lift des ⁇ 2).
- the first lift control module 70 may then notify the second lift control module 74 (e.g., via a notification signal) that the valve lift has been increased to the predetermined valve lift.
- the second lift control module 74 receives the notification (e.g., a notification signal) from the first lift control module 70 .
- the second lift control module 74 also receives signal 76 indicating the desired valve lift.
- the second lift control module 74 may control the lift of the M intake and/or exhaust valves 26 , 32 (via the hydraulic actuators 34 ) based on the notification signal. More specifically, the second lift control module 74 may decrease the lift from the predetermined valve lift to the desired valve lift during a period after receiving the notification signal from the first lift control module 70 . For example, the second lift control module 74 may ramp the lift down to the desired valve lift during the period.
- a method for controlling an EHVA system begins at 100 .
- the control module 50 may determine whether valve disablement or re-enablement has been requested (and if so, a number of valves N). If true, control may proceed to 104 . If false, control may return to 100 .
- the control module 50 may determine the desired valve lift.
- the control module 50 may increase the lift of the remaining M of the intake and/or exhaust valves 26 , 32 to the predetermined valve lift (e.g., twice the desired valve lift).
- the control module 50 may decrease the lift of the M intake and/or exhaust valves 26 , 32 to the desired valve lift. For example, the control module 50 may ramp the lift down to the desired valve lift during a next engine cycle. Control may then return to 100 .
- a method for controlling the EHVA system begins at 150 .
- the control module 50 determines whether N valves are to be disabled during a current engine cycle. If true, control may proceed to 154 . If false, control may proceed to 158 .
- the control module may temporarily (e.g., during a predetermined period) increase the valve lift of M enabled valves to double a normal (i.e., desired) valve lift. Control may then return to 150 . For example only, M may equal N (i.e., disabling or reactivating half of the valves of the engine 12 ).
- control module 50 determines whether the N valves were disabled during a previous engine cycle. If true, control may proceed to 162 . if false, control may proceed to 166 . At 162 , the control module 50 may ramp the valve lift of the M enabled valves from the doubled valve lift down to the desired valve lift. Control may then return to 150 .
- control module 50 determines whether the N valves are to be reactivated within a next predetermined number of engine cycles. If true, control may proceed to 170 . If false, control may proceed to 174 . At 170 , the control module 50 may temporarily ramp the valve lift of the M enabled valves to double the desired valve lift. Control may then return to 150 .
- control module 50 determines whether the N valves are to be reactivated during the current engine cycle. If true, control may proceed to 178 . If false, control may return to 150 . At 178 , the control module 50 may command the valve lift of all the valves to the desired valve lift. Control may then return to 150 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims (19)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/910,212 US8839750B2 (en) | 2010-10-22 | 2010-10-22 | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
DE102011116432A DE102011116432A1 (en) | 2010-10-22 | 2011-10-19 | SYSTEM AND METHOD FOR CONTROLLING A HYDRAULIC PRESSURE IN ELECTRO-HYDRAULIC VALVE CONTROL SYSTEMS |
CN201110322537.6A CN102454492B (en) | 2010-10-22 | 2011-10-21 | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/910,212 US8839750B2 (en) | 2010-10-22 | 2010-10-22 | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120097121A1 US20120097121A1 (en) | 2012-04-26 |
US8839750B2 true US8839750B2 (en) | 2014-09-23 |
Family
ID=45935918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/910,212 Expired - Fee Related US8839750B2 (en) | 2010-10-22 | 2010-10-22 | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US8839750B2 (en) |
CN (1) | CN102454492B (en) |
DE (1) | DE102011116432A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140182547A1 (en) * | 2012-12-28 | 2014-07-03 | Hyundai Motor Company | Control method and system for oil pump of engine provided with variable valve lift apparatus |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8839750B2 (en) * | 2010-10-22 | 2014-09-23 | GM Global Technology Operations LLC | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
US9169787B2 (en) | 2012-05-22 | 2015-10-27 | GM Global Technology Operations LLC | Valve control systems and methods for cylinder deactivation and activation transitions |
US9567928B2 (en) | 2012-08-07 | 2017-02-14 | GM Global Technology Operations LLC | System and method for controlling a variable valve actuation system to reduce delay associated with reactivating a cylinder |
US9046007B2 (en) | 2012-11-27 | 2015-06-02 | Jacob B. Keli | Camless engine operating system |
KR101683492B1 (en) * | 2014-12-09 | 2016-12-07 | 현대자동차 주식회사 | Cylinder deactivation engine |
DE102018206719A1 (en) * | 2018-05-02 | 2019-11-07 | Bayerische Motoren Werke Aktiengesellschaft | Cooling device for cooling a battery of a motor vehicle, motor vehicle and method for operating such a cooling device |
WO2022099219A1 (en) * | 2020-11-09 | 2022-05-12 | Pdc Machines Inc. | Active oil injection system for a diaphragm compressor |
Citations (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1703858A (en) | 1920-09-15 | 1929-03-05 | Falk Corp | Fuel-injection system for oil engines |
US3157166A (en) | 1962-07-30 | 1964-11-17 | Soroban Engineering Inc | Variable dwell and lift mechanism for valves |
US3926159A (en) * | 1974-03-25 | 1975-12-16 | Gunnar P Michelson | High speed engine valve actuator |
US4000756A (en) * | 1974-03-25 | 1977-01-04 | Ule Louis A | High speed engine valve actuator |
US4009695A (en) | 1972-11-14 | 1977-03-01 | Ule Louis A | Programmed valve system for internal combustion engine |
US4044652A (en) | 1975-05-12 | 1977-08-30 | The Garrett Corporation | Electrohydraulic proportional actuator apparatus |
US4459946A (en) | 1982-05-17 | 1984-07-17 | Investment Rarities, Incorporated | Valve actuating apparatus utilizing a multi-profiled cam unit for controlling internal combustion engines |
US4807517A (en) | 1982-09-30 | 1989-02-28 | Allied-Signal Inc. | Electro-hydraulic proportional actuator |
US5267541A (en) * | 1991-01-31 | 1993-12-07 | Aisin Seiki Kabushiki Kaisha | Control device for a variable displacement engine |
US5373818A (en) | 1993-08-05 | 1994-12-20 | Bayerische Motoren Werke Ag | Valve gear assembly for an internal-combustion engine |
US5421545A (en) | 1993-09-03 | 1995-06-06 | Caterpillar Inc. | Poppet valve with force feedback control |
US5546222A (en) | 1992-11-18 | 1996-08-13 | Lightwave Electronics Corporation | Multi-pass light amplifier |
US5572961A (en) | 1995-04-05 | 1996-11-12 | Ford Motor Company | Balancing valve motion in an electrohydraulic camless valvetrain |
US5638781A (en) | 1995-05-17 | 1997-06-17 | Sturman; Oded E. | Hydraulic actuator for an internal combustion engine |
US5881689A (en) | 1995-11-18 | 1999-03-16 | Man B&W Diesel Aktiengesellschaft | Device to control valves of an internal combustion engine, especially the gas supply valve of a gas engine |
US6109284A (en) | 1999-02-26 | 2000-08-29 | Sturman Industries, Inc. | Magnetically-latchable fluid control valve system |
US6112711A (en) | 1996-11-18 | 2000-09-05 | Toyota Jidosha Kabushiki Kaisha | Valve performance control apparatus for internal combustion engines |
US6263842B1 (en) | 1998-09-09 | 2001-07-24 | International Truck And Engine Corporation | Hydraulically-assisted engine valve actuator |
US6374784B1 (en) | 1998-11-12 | 2002-04-23 | Hydraulik-Ring Gmbh | Valve control mechanism for intake and exhaust valves of internal combustion engines |
US20020177939A1 (en) * | 2001-05-24 | 2002-11-28 | Daniel Kabasin | Apparatus and method for two-step intake phased engine control system |
US6505584B2 (en) | 2000-12-20 | 2003-01-14 | Visteon Global Technologies, Inc. | Variable engine valve control system |
US20030015155A1 (en) | 2000-12-04 | 2003-01-23 | Turner Christopher Wayne | Hydraulic valve actuation systems and methods |
US20030062019A1 (en) | 2001-09-29 | 2003-04-03 | Dietrich Schaefer-Siebert | Method for moment-neutral switching off a cylinder by deactivation of gas-changing valves |
US20030172885A1 (en) | 2001-01-16 | 2003-09-18 | Hermann Gaessler | Pressure reservoir for exerting pressure on a hydraulic system with which preferablya gas exchange valve of an internal combustion engine is actuated |
US6688267B1 (en) | 2003-03-19 | 2004-02-10 | General Motors Corporation | Engine valve actuator assembly |
US6691652B2 (en) * | 2001-09-25 | 2004-02-17 | Avl List Gmbh | Variable valve drive |
US6810844B2 (en) * | 2002-12-10 | 2004-11-02 | Delphi Technologies, Inc. | Method for 3-step variable valve actuation |
US6868811B2 (en) * | 2002-06-13 | 2005-03-22 | Delphi Technologies, Inc. | Frameless variable valve actuation mechanism |
US6886510B2 (en) | 2003-04-02 | 2005-05-03 | General Motors Corporation | Engine valve actuator assembly with dual hydraulic feedback |
US6981475B2 (en) * | 2003-03-12 | 2006-01-03 | Peugeot Citroen Automobiles Sa | Process for controlling the valves of an internal combustion engine |
US7025326B2 (en) * | 2002-07-11 | 2006-04-11 | Sturman Industries, Inc. | Hydraulic valve actuation methods and apparatus |
US20060144356A1 (en) * | 2004-12-30 | 2006-07-06 | Sellnau Mark C | Method and apparatus for optimized combustion in an internal combustion engine utilizing homogeneous charge compression ignition and variable valve actuation |
US20060169231A1 (en) * | 2005-02-01 | 2006-08-03 | Naohide Fuwa | Intake air amount control apparatus and intake air amount control method for internal combustion engine |
US20070006831A1 (en) * | 2005-07-07 | 2007-01-11 | Thomas Leone | Method for controlling a variable event valvetrain |
US7278392B2 (en) * | 2005-01-07 | 2007-10-09 | Volkswagen Ag | Method for operating a hybrid vehicle and hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor |
US20070256651A1 (en) * | 2006-05-03 | 2007-11-08 | Marriott Craig D | Valve actuator assembly having a center biased spool valve with detent feature |
US20080173264A1 (en) * | 2006-10-11 | 2008-07-24 | Gm Global Technology Operations, Inc. | Drive piston assembly for a valve actuator assembly |
US20090007866A1 (en) * | 2007-07-04 | 2009-01-08 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method therefor |
US20090014672A1 (en) * | 2007-06-01 | 2009-01-15 | Juergen Schiemann | Method and device for controlling a hydraulic actuator |
US20090070016A1 (en) * | 2007-09-07 | 2009-03-12 | Gm Global Technology Operations, Inc. | Valvetrain control systems for internal combustion engines with time and event based control |
US7580779B2 (en) * | 2005-01-07 | 2009-08-25 | Volkswagen Ag | Method for operating a hybrid vehicle and hybrid vehicle |
US20090229562A1 (en) * | 2008-03-11 | 2009-09-17 | Gm Global Technology Operations, Inc. | Spark timing and control during transitions between spark ignited combustion and homogenous charge compression ignition |
US20090229563A1 (en) * | 2008-03-13 | 2009-09-17 | Gm Global Technology Operations, Inc. | Hcci/si combustion switching control system and method |
US20090277407A1 (en) * | 2005-02-23 | 2009-11-12 | Toyota Jidosha Kabushiki Kaisha | Valve Gear of Internal Combustion Engine |
US7685976B2 (en) * | 2006-03-24 | 2010-03-30 | Gm Global Technology Operations, Inc. | Induction tuning using multiple intake valve lift events |
US7748353B2 (en) * | 2006-03-02 | 2010-07-06 | Ford Global Technologies, Llc | Hydraulic actuation system for improved engine control |
US20100192925A1 (en) * | 2009-02-04 | 2010-08-05 | Toyota Jidosha Kabushiki Kaisha | Control device for internal combustion engine and control method for internal combustion engine |
US20100307433A1 (en) * | 2007-11-23 | 2010-12-09 | Bernhard Rust | Hydraulically operated valve actuation and internal combustion engine with such a valve actuation |
US20110073069A1 (en) * | 2009-09-30 | 2011-03-31 | Gm Global Technology Operations, Inc. | Variable valve actuation control systems and methods |
US20110144894A1 (en) * | 2009-12-15 | 2011-06-16 | Gm Global Technology Operations, Inc. | Air Assist Start Stop Methods and Systems |
US20110197833A1 (en) * | 1997-12-11 | 2011-08-18 | Jacobs Vehicle Systems, Inc. | Variable Lost Motion Valve Actuator and Method |
US20120031373A1 (en) * | 2010-08-05 | 2012-02-09 | Gm Global Technology Operations, Inc. | System and method for controlling engine knock using electro-hydraulic valve actuation |
US20120097121A1 (en) * | 2010-10-22 | 2012-04-26 | Gm Global Technology Operations, Inc. | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
US8171900B2 (en) * | 2010-01-11 | 2012-05-08 | GM Global Technology Operations LLC | Engine including hydraulically actuated valvetrain and method of valve overlap control |
US20120168654A1 (en) * | 2011-01-04 | 2012-07-05 | GM Global Technology Operations LLC | Hydraulic engine valve actuation system including independent feedback control |
US8224537B2 (en) | 2010-04-20 | 2012-07-17 | GM Global Technology Operations LLC | Method and apparatus for dry clutch temperature prediction in a DCT |
US8494742B2 (en) | 2010-09-10 | 2013-07-23 | GM Global Technology Operations LLC | Engine torque estimation systems and methods |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7559300B2 (en) * | 2003-12-12 | 2009-07-14 | Jacobs Vehicle Systems, Inc. | Multiple slave piston valve actuation system |
US7740003B2 (en) * | 2007-09-07 | 2010-06-22 | Gm Global Technology Operations, Inc. | Valvetrain control systems for internal combustion engines with different intake and exhaust leading modes |
-
2010
- 2010-10-22 US US12/910,212 patent/US8839750B2/en not_active Expired - Fee Related
-
2011
- 2011-10-19 DE DE102011116432A patent/DE102011116432A1/en not_active Withdrawn
- 2011-10-21 CN CN201110322537.6A patent/CN102454492B/en not_active Expired - Fee Related
Patent Citations (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1703858A (en) | 1920-09-15 | 1929-03-05 | Falk Corp | Fuel-injection system for oil engines |
US3157166A (en) | 1962-07-30 | 1964-11-17 | Soroban Engineering Inc | Variable dwell and lift mechanism for valves |
US4009695A (en) | 1972-11-14 | 1977-03-01 | Ule Louis A | Programmed valve system for internal combustion engine |
US3926159A (en) * | 1974-03-25 | 1975-12-16 | Gunnar P Michelson | High speed engine valve actuator |
US4000756A (en) * | 1974-03-25 | 1977-01-04 | Ule Louis A | High speed engine valve actuator |
US4044652A (en) | 1975-05-12 | 1977-08-30 | The Garrett Corporation | Electrohydraulic proportional actuator apparatus |
US4459946A (en) | 1982-05-17 | 1984-07-17 | Investment Rarities, Incorporated | Valve actuating apparatus utilizing a multi-profiled cam unit for controlling internal combustion engines |
US4807517A (en) | 1982-09-30 | 1989-02-28 | Allied-Signal Inc. | Electro-hydraulic proportional actuator |
US5267541A (en) * | 1991-01-31 | 1993-12-07 | Aisin Seiki Kabushiki Kaisha | Control device for a variable displacement engine |
US5546222A (en) | 1992-11-18 | 1996-08-13 | Lightwave Electronics Corporation | Multi-pass light amplifier |
US5373818A (en) | 1993-08-05 | 1994-12-20 | Bayerische Motoren Werke Ag | Valve gear assembly for an internal-combustion engine |
US5421545A (en) | 1993-09-03 | 1995-06-06 | Caterpillar Inc. | Poppet valve with force feedback control |
US5572961A (en) | 1995-04-05 | 1996-11-12 | Ford Motor Company | Balancing valve motion in an electrohydraulic camless valvetrain |
US5638781A (en) | 1995-05-17 | 1997-06-17 | Sturman; Oded E. | Hydraulic actuator for an internal combustion engine |
US5881689A (en) | 1995-11-18 | 1999-03-16 | Man B&W Diesel Aktiengesellschaft | Device to control valves of an internal combustion engine, especially the gas supply valve of a gas engine |
US6112711A (en) | 1996-11-18 | 2000-09-05 | Toyota Jidosha Kabushiki Kaisha | Valve performance control apparatus for internal combustion engines |
US20110197833A1 (en) * | 1997-12-11 | 2011-08-18 | Jacobs Vehicle Systems, Inc. | Variable Lost Motion Valve Actuator and Method |
US6263842B1 (en) | 1998-09-09 | 2001-07-24 | International Truck And Engine Corporation | Hydraulically-assisted engine valve actuator |
US6374784B1 (en) | 1998-11-12 | 2002-04-23 | Hydraulik-Ring Gmbh | Valve control mechanism for intake and exhaust valves of internal combustion engines |
US6109284A (en) | 1999-02-26 | 2000-08-29 | Sturman Industries, Inc. | Magnetically-latchable fluid control valve system |
US20030015155A1 (en) | 2000-12-04 | 2003-01-23 | Turner Christopher Wayne | Hydraulic valve actuation systems and methods |
US6739293B2 (en) * | 2000-12-04 | 2004-05-25 | Sturman Industries, Inc. | Hydraulic valve actuation systems and methods |
US6505584B2 (en) | 2000-12-20 | 2003-01-14 | Visteon Global Technologies, Inc. | Variable engine valve control system |
US20030172885A1 (en) | 2001-01-16 | 2003-09-18 | Hermann Gaessler | Pressure reservoir for exerting pressure on a hydraulic system with which preferablya gas exchange valve of an internal combustion engine is actuated |
US20020177939A1 (en) * | 2001-05-24 | 2002-11-28 | Daniel Kabasin | Apparatus and method for two-step intake phased engine control system |
US6691652B2 (en) * | 2001-09-25 | 2004-02-17 | Avl List Gmbh | Variable valve drive |
US20030062019A1 (en) | 2001-09-29 | 2003-04-03 | Dietrich Schaefer-Siebert | Method for moment-neutral switching off a cylinder by deactivation of gas-changing valves |
US6748916B2 (en) * | 2001-09-29 | 2004-06-15 | Robert Bosch Gmbh | Method for moment-neutral switching off a cylinder by deactivation of gas-changing valves |
US6868811B2 (en) * | 2002-06-13 | 2005-03-22 | Delphi Technologies, Inc. | Frameless variable valve actuation mechanism |
US7025326B2 (en) * | 2002-07-11 | 2006-04-11 | Sturman Industries, Inc. | Hydraulic valve actuation methods and apparatus |
US6810844B2 (en) * | 2002-12-10 | 2004-11-02 | Delphi Technologies, Inc. | Method for 3-step variable valve actuation |
US6981475B2 (en) * | 2003-03-12 | 2006-01-03 | Peugeot Citroen Automobiles Sa | Process for controlling the valves of an internal combustion engine |
US6688267B1 (en) | 2003-03-19 | 2004-02-10 | General Motors Corporation | Engine valve actuator assembly |
US6886510B2 (en) | 2003-04-02 | 2005-05-03 | General Motors Corporation | Engine valve actuator assembly with dual hydraulic feedback |
US20060144356A1 (en) * | 2004-12-30 | 2006-07-06 | Sellnau Mark C | Method and apparatus for optimized combustion in an internal combustion engine utilizing homogeneous charge compression ignition and variable valve actuation |
US7278392B2 (en) * | 2005-01-07 | 2007-10-09 | Volkswagen Ag | Method for operating a hybrid vehicle and hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor |
US7580779B2 (en) * | 2005-01-07 | 2009-08-25 | Volkswagen Ag | Method for operating a hybrid vehicle and hybrid vehicle |
US20060169231A1 (en) * | 2005-02-01 | 2006-08-03 | Naohide Fuwa | Intake air amount control apparatus and intake air amount control method for internal combustion engine |
US20090277407A1 (en) * | 2005-02-23 | 2009-11-12 | Toyota Jidosha Kabushiki Kaisha | Valve Gear of Internal Combustion Engine |
US20070006831A1 (en) * | 2005-07-07 | 2007-01-11 | Thomas Leone | Method for controlling a variable event valvetrain |
US8347836B2 (en) * | 2005-07-07 | 2013-01-08 | Ford Global Technologies, Llc | Method for controlling a variable event valvetrain |
US7748353B2 (en) * | 2006-03-02 | 2010-07-06 | Ford Global Technologies, Llc | Hydraulic actuation system for improved engine control |
US7685976B2 (en) * | 2006-03-24 | 2010-03-30 | Gm Global Technology Operations, Inc. | Induction tuning using multiple intake valve lift events |
US7644688B2 (en) * | 2006-05-03 | 2010-01-12 | Gm Global Technology Operations, Inc. | Valve actuator assembly having a center biased spool valve with detent feature |
US20070256651A1 (en) * | 2006-05-03 | 2007-11-08 | Marriott Craig D | Valve actuator assembly having a center biased spool valve with detent feature |
US20080173264A1 (en) * | 2006-10-11 | 2008-07-24 | Gm Global Technology Operations, Inc. | Drive piston assembly for a valve actuator assembly |
US20090014672A1 (en) * | 2007-06-01 | 2009-01-15 | Juergen Schiemann | Method and device for controlling a hydraulic actuator |
US20090007866A1 (en) * | 2007-07-04 | 2009-01-08 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method therefor |
US20090070016A1 (en) * | 2007-09-07 | 2009-03-12 | Gm Global Technology Operations, Inc. | Valvetrain control systems for internal combustion engines with time and event based control |
US20100307433A1 (en) * | 2007-11-23 | 2010-12-09 | Bernhard Rust | Hydraulically operated valve actuation and internal combustion engine with such a valve actuation |
US20090229562A1 (en) * | 2008-03-11 | 2009-09-17 | Gm Global Technology Operations, Inc. | Spark timing and control during transitions between spark ignited combustion and homogenous charge compression ignition |
US20090229563A1 (en) * | 2008-03-13 | 2009-09-17 | Gm Global Technology Operations, Inc. | Hcci/si combustion switching control system and method |
US20100192925A1 (en) * | 2009-02-04 | 2010-08-05 | Toyota Jidosha Kabushiki Kaisha | Control device for internal combustion engine and control method for internal combustion engine |
US20110073069A1 (en) * | 2009-09-30 | 2011-03-31 | Gm Global Technology Operations, Inc. | Variable valve actuation control systems and methods |
US20110144894A1 (en) * | 2009-12-15 | 2011-06-16 | Gm Global Technology Operations, Inc. | Air Assist Start Stop Methods and Systems |
US8171900B2 (en) * | 2010-01-11 | 2012-05-08 | GM Global Technology Operations LLC | Engine including hydraulically actuated valvetrain and method of valve overlap control |
US8224537B2 (en) | 2010-04-20 | 2012-07-17 | GM Global Technology Operations LLC | Method and apparatus for dry clutch temperature prediction in a DCT |
US20120031373A1 (en) * | 2010-08-05 | 2012-02-09 | Gm Global Technology Operations, Inc. | System and method for controlling engine knock using electro-hydraulic valve actuation |
US8602002B2 (en) | 2010-08-05 | 2013-12-10 | GM Global Technology Operations LLC | System and method for controlling engine knock using electro-hydraulic valve actuation |
US8494742B2 (en) | 2010-09-10 | 2013-07-23 | GM Global Technology Operations LLC | Engine torque estimation systems and methods |
US20120097121A1 (en) * | 2010-10-22 | 2012-04-26 | Gm Global Technology Operations, Inc. | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems |
US20120168654A1 (en) * | 2011-01-04 | 2012-07-05 | GM Global Technology Operations LLC | Hydraulic engine valve actuation system including independent feedback control |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140182547A1 (en) * | 2012-12-28 | 2014-07-03 | Hyundai Motor Company | Control method and system for oil pump of engine provided with variable valve lift apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN102454492B (en) | 2015-07-01 |
CN102454492A (en) | 2012-05-16 |
DE102011116432A1 (en) | 2012-05-03 |
US20120097121A1 (en) | 2012-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8839750B2 (en) | System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems | |
US8602002B2 (en) | System and method for controlling engine knock using electro-hydraulic valve actuation | |
US9458780B2 (en) | Systems and methods for controlling cylinder deactivation periods and patterns | |
US9441550B2 (en) | Cylinder firing fraction determination and control systems and methods | |
US9416743B2 (en) | Cylinder activation/deactivation sequence control systems and methods | |
US10227939B2 (en) | Cylinder deactivation pattern matching | |
US9458778B2 (en) | Cylinder activation and deactivation control systems and methods | |
US9239024B2 (en) | Recursive firing pattern algorithm for variable cylinder deactivation in transient operation | |
US8979708B2 (en) | Torque converter clutch slip control systems and methods based on active cylinder count | |
US8550055B2 (en) | Fuel management systems and methods for variable displacement engines | |
US9441525B2 (en) | Method and apparatus to control regeneration of a particulate filter | |
US8452520B2 (en) | Control system and method for low quantity fuel injection | |
US8099231B1 (en) | System and method for detecting fuel injector malfunction based on engine vibration | |
US9556811B2 (en) | Firing pattern management for improved transient vibration in variable cylinder deactivation mode | |
US9279376B2 (en) | System and method for controlling exhaust gas recirculation | |
US10920680B2 (en) | System and method for providing engine braking | |
US20120080009A1 (en) | System and method for controlling fuel injection timing to decrease emissions during transient engine operation | |
US9303553B2 (en) | Turbo speed control for mode transitions in a dual turbo system | |
US9429081B2 (en) | Cylinder re-activation fueling control systems and methods | |
US8635003B2 (en) | System and method for calibration and fault detection of non-contact position sensor | |
US11560133B2 (en) | Systems and methods for limiting engine torque and controlling a clutch | |
CN111706439B (en) | System and method for cylinder deactivation in a dedicated EGR engine | |
US11073051B2 (en) | Combination oil control valve and fuel injector driver | |
GB2614096A (en) | Exhaust system, controller and method for an internal combustion engine | |
JP2013238136A (en) | Control device of internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GM GLOBAL TECHNOLOGY OPERATIONS, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRENNAN, DANIEL G.;MARRIOTT, CRAIG D.;COWGILL, JOEL;AND OTHERS;SIGNING DATES FROM 20100910 TO 20101015;REEL/FRAME:025181/0856 |
|
AS | Assignment |
Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN Free format text: CHANGE OF NAME;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS, INC.;REEL/FRAME:025780/0482 Effective date: 20101202 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST COMPANY, DELAWARE Free format text: SECURITY AGREEMENT;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS LLC;REEL/FRAME:026499/0267 Effective date: 20101027 |
|
AS | Assignment |
Owner name: ENERGY, UNITED STATE DEPARTMENT OF, DISTRICT OF CO Free format text: CONFIRMATORY LICENSE;ASSIGNOR:GENERAL MOTORS GLOBAL TECHNOLOGY OPERATIONS;REEL/FRAME:026566/0616 Effective date: 20110624 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:034287/0159 Effective date: 20141017 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20220923 |